From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62E28C4360C for ; Wed, 16 Oct 2019 03:44:34 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3559620663 for ; Wed, 16 Oct 2019 03:44:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="TWlK6wPi" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3559620663 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=c0rYHfgTsIhp+OQp7+K3fYkWg2M73FQSmv3As2aCoNU=; b=TWlK6wPiTVJcgF otDiIDUp9ix3pKhIj0P34eFIyhpCnCg1vARzCT+zuwnt/kLr18AxyEcNmFqJkA37bgPEx3lXBuT4Y i3KntxT/D8p3Mqksw9/iXGPKpgsKXf5Z7VoYqk4ns96JLY9Oz6sjX3RDwo9DvFtPhhrkggAqhkSCA mZYT/AGnOKgL5/3dtZxggodGIpBt3FmVKw1RBMg2syegevtTg52hg9dZEMudbCp2m3C/64pUrzdZZ 7h2PupTChtlapTbTDoVwEvNud2FiokGyNODcjU0rSjcoY5nY16lcNF0gc7Fdb5fEpW52Iqgl5su4u jxFGXVhiHO5xI93YRolg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKaEg-0002n8-2g; Wed, 16 Oct 2019 03:44:30 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKaEb-0002m1-S7; Wed, 16 Oct 2019 03:44:27 +0000 X-UUID: 2115474a97e74e02a8f80dae8f12730e-20191015 X-UUID: 2115474a97e74e02a8f80dae8f12730e-20191015 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 836045921; Tue, 15 Oct 2019 19:44:08 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 15 Oct 2019 20:34:18 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 16 Oct 2019 11:34:17 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 16 Oct 2019 11:34:16 +0800 From: Yong Wu To: Matthias Brugger , Joerg Roedel , Will Deacon Subject: [PATCH v4 7/7] iommu/mediatek: Reduce the tlb flush timeout value Date: Wed, 16 Oct 2019 11:33:12 +0800 Message-ID: <1571196792-12382-8-git-send-email-yong.wu@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1571196792-12382-1-git-send-email-yong.wu@mediatek.com> References: <1571196792-12382-1-git-send-email-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191015_204425_913880_199440F4 X-CRM114-Status: GOOD ( 11.69 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: youlin.pei@mediatek.com, anan.sun@mediatek.com, Nicolas Boichat , cui.zhang@mediatek.com, srv_heupstream@mediatek.com, chao.hao@mediatek.com, edison.hsieh@mediatek.com, linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, yong.wu@mediatek.com, Robin Murphy , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Reduce the tlb timeout value from 100000us to 1000us. the original value is so long that affect the multimedia performance. This is only a minor improvement rather than fixing a issue. Signed-off-by: Yong Wu --- drivers/iommu/mtk_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index c2b7ed5..8ca2e99 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -192,7 +192,7 @@ static void mtk_iommu_tlb_flush_range_sync(unsigned long iova, size_t size, /* tlb sync */ ret = readl_poll_timeout_atomic(data->base + REG_MMU_CPE_DONE, - tmp, tmp != 0, 10, 100000); + tmp, tmp != 0, 10, 1000); if (ret) { dev_warn(data->dev, "Partial TLB flush timed out, falling back to full flush\n"); -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel